Evaluation of the effect of micronutrient fertilizers based on chelates on grape and wine quality characteristics

• Published in: IOP conference series. Earth and environmental science 2021-03, Vol.699 (1), p.12024
• Main Authors: Cherviak, S, Anikina, N, Ermikhina, M, Aleinikova, N, Didenko, P
• Format: Article
• Language: English
• Subjects: Anthocyanins; Aroma; Chelates; Fertilizers; Fruits; Grapes; Nutrition; Palate; Phenolic compounds; Phenols; Wines
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/699/1/012024

Mineral nutrition plays an important role in the processes of growth and development of the grape vine. Our studies show that using microfertilizers based on chelates during the growing season contributes to an increase in the bunch weight by 3.9-18.2 g and in the grape yield by 5.4-18.9%. Experimental grape samples are characterized by a higher content of titratable acids (by 0.8-1.8 g/l) and anthocyanins in a berry (by 12-39%), the proportion of extractable anthocyanins (by 3-8%) and a low content of seed tannins (by 2-3 times) compared to the control. In the prepared wines, the content of the total dry extract and phenolic substances exceeded the control values by 1.3-6.1 g/l and 13-27%, respectively. Experimental systems of treatment had a positive effect on the quality characteristics of wines: red color, varietal aroma of berry direction, fresh and fuller palate compared to the control variant, which was reflected in the tasting assessment (5-7 points higher than the control).